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经营范围
发明名称
MINING MACHINERY
摘要
申请公布号
GB1441609(A)
申请公布日期
1976.07.07
申请号
GB19730056829
申请日期
1973.12.07
申请人
GREEN BINGHAM LTD
发明人
分类号
E21C27/22;(IPC1-7):E21C27/24
主分类号
E21C27/22
代理机构
代理人
主权项
地址
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